Finding the Fourth Proportional to 42,669.48, 64,012.48 and 16,372.18

Step by Step Solution

1. Step 1: Write the proportion equation
   42,669.48 : 64,012.48 = 16,372.18 : x
2. Step 2: Convert to fraction form
   42,669.48/64,012.48 = 16,372.18/x
3. Step 3: Cross multiply
   42,669.48x = 64,012.48 × 16,372.18
4. Step 4: Simplify right side
   42,669.48x = 1,048,023,844.81
5. Step 5: Solve for x
   x = 1,048,023,844.81/42,669.48
6. Step 6: Final answer
   x = 24,561.44